首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Back in 1975, economists plotted rising life expectancies against countries’ wealth, and concluded that wealth itself increases
Back in 1975, economists plotted rising life expectancies against countries’ wealth, and concluded that wealth itself increases
admin
2020-09-03
46
问题
Back in 1975, economists plotted rising life expectancies against countries’ wealth, and concluded that wealth itself increases longevity. It seemed self-evident: everything people need to be healthy—from food to medical care— costs money.
But soon it emerged that the data didn’t always fit that theory. Economic upturns didn’t always mean longer lives. In addition, for reasons that weren’t clear, a given gain in gross domestic product (GDP) caused increasingly higher gains in life expectancy over time, as though it was becoming cheaper to add years of life. Moreover, in the 1980s researchers found gains in literacy were associated with greater increases in life expectancy than gains in wealth were. Finally, the more educated people in any country tend to live longer than their less educated fellow citizens. But such people also tend to be wealthier, so it has been difficult to untangle which factor is increasing lifespan.
Wolfgang Lutz and his colleagues have now done that by compiling average data on GDP per person, lifespans, and years of education from 174 countries, dating from 1970 to 2010. They found that, just as in 1975, wealth correlated with longevity. But the correlation between longevity and years of schooling was closer, with a direct relationship that did not change over time, the way wealth does. When the team put both these factors into the same mathematical model, they found that differences in education closely predicted differences in life expectancy, while changes in wealth barely mattered.
Lutz argues that because schooling happens many years before a person has attained their life expectancy, this correlation reflects cause: better education drives longer life. It also tends to lead to more wealth, which is why wealth and longevity are also correlated. But what is important, says Lutz, is that wealth does not seem to be driving longevity, as experts thought—in fact, education is driving both of them.
He thinks this is because education permanently improves a person’s cognitive abilities, allowing better planning and self-control throughout the rest of their life. This idea is supported by the fact that people who are more intelligent appear to live longer.
What did economists conclude about longevity in 1975?
选项
A、Literacy influenced longevity more than wealth did.
B、Wealth itself could increase life expectancy.
C、Economic growth didn’t always mean longer life.
D、A given growth in GDP caused higher gains in longevity.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/csO7777K
0
大学英语四级
相关试题推荐
A、Becauseithasalotofmeanings.B、Becauseitisanuncommonword.C、Becauseitsmeaningsareconfusing.D、Becausenoonehas
A、Becausehejumpsveryhightoreachthebasket.B、Becauseitlookslikehecouldflywhileshootingthebasket.C、Becausehei
A、Becausetheteachinglevelishigher.B、Becausethiswayofteachingischeapercomparedwithotherways.C、Becausetheywere
A、Writingcanbringawriterwealthandfame.B、Beingawriterisverydifferentfromwriting.C、Persistenceisveryimportanti
Itseemsindividualcancercellssendoutthesamedistresssignalsaswounds,trickingimmunecellsintohelpingthemgrowinto
Backin1975,economistsplottedrisinglifeexpectanciesagainstcountries’wealth,andconcludedthatwealthitselfincreases
Almost150yearsafterphotovoltaic(光电的)cellsandwindturbines(涡轮机)wereinvented,theystillgenerateonly7%oftheworld’
Ithoughthavingababywouldhurtmywritingcareer.Iwaswrong.A)Ialmostdidn’thaveachildbecauseofmycareerasa
Ithoughthavingababywouldhurtmywritingcareer.Iwaswrong.A)Ialmostdidn’thaveachildbecauseofmycareerasa
There’sNoPlaceLikeHome[A]Onalmostanynightoftheweek,Churchill’sRestaurantishopping.The10-year-oldhotspotinRo
随机试题
比率分析法主要分为()
心房颤动的临床特点包括
维生素B12的吸收部位是
患者头痛而胀,发热恶风,面红目赤,口渴欲饮,便秘溲黄,舌质红,苔黄,脉浮数。方选患者头痛如裹,肢体困重,纳呆胸闷,小便不利,大便溏,苔白腻,脉濡。方选
温疟的主证之一是
男,50岁,息肝硬化5年,半天来呕血4次,量约1200ml,黑便2次,量约600g,伴头晕、心悸。入院查体:BP8.0/5.0kPa,心率180次/min,巩膜轻度黄染,腹部膨隆,移动性浊音阳性。关于三腔二囊管的护理下列哪项不正确
不属于安全生产检查的方法的选项的是()。
关于施工总承包管理模式特点的说法,正确的有()。
幼儿教师了解幼儿的最好的信息源来自()。
TheThree-YearSolutionHartwickCollege,asmallliberal-artsschoolinupstateNewYork,makesthisoffertowell-prepared
最新回复
(
0
)